CHANGES TO DNA EXEMPTIONS

CHANGES TO DNA EXEMPTIONS

As of the close of business on 19th July 2019, it will no longer be possible to seek a general exemption from the Shorthorn Beef board for registration of progeny from sires and donor dams that do not have a suitable DNA profile collected.

The Shorthorn Beef office will be able to advise you on the DNA status of any of your animals. If you have any queries or concerns or believe that you may need an exemption, please contact the office before July 19th.

It will still be possible to seek an exemption from the board and at the board’s discretion, for frozen genetics that were stored prior to July 1st 2019.

For any new sires and donor dams, prior to registering progeny after July 1st 2019, it is now also a requirement that they have recorded a Shorthorn Standard Bundle DNA profile which includes the 50K panel, paternal parent verification, poll and myostatin testing.

If DNA testing demonstrates that a pedigree is recorded with the incorrect parent, the animal will be made inactive until the correct pedigree can be determined by DNA. If, after all reasonable attempts have been made to determine the correct pedigree and the correct pedigree cannot be determined, the animal will be de-registered, however it may be re-registered through the SFA system with any known pedigree recorded.

For animals introduced after July 1st 2019, from either the Performance Herds Australia or Australian Beef Shorthorn registers, they are required to have a Shorthorn Standard Bundle DNA profile as well as tested free by DNA of PHA, TH and DS prior to registration. This move is to protect the integrity of the Shorthorn Beef registers.

GENOMIC REFERENCE POPULATIONS

Just like any genetic evaluation system, genomic systems require linkages across the overall population. One way to do this is by ensuring that all sires and donor dams have a 50K panel recorded. This will assist with genomic calculations into the future for all Shorthorn breeders.

This is part of the reason for ensuring that all new sires and donors are genotyped. However, there are other reasons.

MICROSATELLITE VS SNP TECHNOLOGIES.

The Shorthorn Beef office is often asked to perform parentage tests on progeny for members. To do this, the office requires a suitable DNA profile recorded on all possible parents as well as the progeny to be tested. It is important for this reason to ensure that sires and donor dams have a suitable genomic test recorded.

It is important that members understand that many older Shorthorn bulls were DNA tested using the old Microsatellite (MiP) technology. Whilst the MiP technology has been a good servant of the beef industry for parentage testing, it is now being replaced by Single Nucleotide Polymorphism (SNP) technology. SNP technology is the foundation that current and future genomics are being built on. The 50K panels and new poll tests use the new SNP technology.

From December 31st 2020, Neogen have informed us that they will no longer be able to run MiP tests. For parentage testing beyond this date, the sires and dams will be required to have a SNP panel recorded to complete the test. Unfortunately, the MiP and SNP results are different and not compatible, so to complete parentage, all animals must have been tested using the same technology ie; you can’t test parentage from a SNP tested progeny if the sire has a MiP test.

In many cases, the original sample that was used for the MiP test can be reused for a SNP test, however breeders shouldn’t count on this always being the case. In some cases the original sample was exhausted to create the MiP or the sample may have deteriorated, so before using an older bull please contact the office to see what type of test he has.

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About Shorthorn

The Shorthorn breed is truly unique, from their distinctive roan colour, to their rich breed history and most importantly, the wonderful community of breeders, there is nothing else quite like a Shorthorn.

The key to the Shorthorn breeds advantage lies in their balanced genetic profile, driven by market participation that has been developed and refined, after more than 200 years of genetic selection under Australian conditions.

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